graphite.c (exclude_component_ref): Renamed contains_component_ref_p.

2009-03-18  Sebastian Pop  <sebastian.pop@amd.com>

	* graphite.c (exclude_component_ref): Renamed contains_component_ref_p.
	(is_simple_operand): Call contains_component_ref_p before calling data
	reference analysis that would fail on COMPONENT_REFs.

	* tree-vrp.c (search_for_addr_array): Fix formatting.

	* g++.dg/graphite: New.
	* g++.dg/graphite/graphite.exp: New.
	* g++.dg/graphite/pr39447.C: New.

From-SVN: r144937

1 files changed, 14 insertions, 19 deletions

diff --git a/gcc/graphite.c b/gcc/graphite.c
index 58b67f4..b732b40 100644
--- a/gcc/graphite.c
+++ b/gcc/graphite.c
@@ -1058,31 +1058,24 @@ loop_affine_expr (basic_block scop_entry, struct loop *loop, tree expr)
 	  || evolution_function_is_affine_multivariate_p (scev, n));
 }
 
-/* Return false if the tree_code of the operand OP or any of its operands
-   is component_ref.  */
+/* Return true if REF or any of its subtrees contains a
+   component_ref.  */
 
 static bool
-exclude_component_ref (tree op) 
+contains_component_ref_p (tree ref)
 {
-  int i;
-  int len;
+  if (!ref)
+    return false;
 
-  if (op)
+  while (handled_component_p (ref))
     {
-      if (TREE_CODE (op) == COMPONENT_REF)
-	return false;
-      else
-	{
-	  len = TREE_OPERAND_LENGTH (op);	  
-	  for (i = 0; i < len; ++i)
-	    {
-	      if (!exclude_component_ref (TREE_OPERAND (op, i)))
-		return false;
-	    }
-	}
+      if (TREE_CODE (ref) == COMPONENT_REF)
+	return true;
+
+      ref = TREE_OPERAND (ref, 0);
     }
 
-  return true;
+  return false;
 }
 
 /* Return true if the operand OP is simple.  */
@@ -1094,13 +1087,15 @@ is_simple_operand (loop_p loop, gimple stmt, tree op)
   if (DECL_P (op)
       /* or a structure,  */
       || AGGREGATE_TYPE_P (TREE_TYPE (op))
+      /* or a COMPONENT_REF,  */
+      || contains_component_ref_p (op)
       /* or a memory access that cannot be analyzed by the data
 	 reference analysis.  */
       || ((handled_component_p (op) || INDIRECT_REF_P (op))
 	  && !stmt_simple_memref_p (loop, stmt, op)))
     return false;
 
-  return exclude_component_ref (op);
+  return true;
 }
 
 /* Return true only when STMT is simple enough for being handled by